Earl Sinclair (voice)
Fran Sinclair (voice)
Robbie Sinclair (voice)
Charlene Sinclair (voice)
Baby Sinclair (voice)
Roy Hess (voice) / Roy Hess / The Doctor (voice)
Grandma Ethyl Phillips (voice)
B.P. Richfield (voice)
Monica Devertebrae (voice) / Monica Devertebrae / Sally (voice)
Mr. Pulman (voice) / Georgie (voice)
Bryant (voice) / Officer Bettleheim (voice)
Spike (voice)
Frank (voice) / Richard (voice)
Mindy (voice) / Sitcom Wife (voice)
UFO! Host / Announcer (voice) / Gus Molehill (voice)
Jean-Claude (voice) / Henri Poupon (voice)
WeSaySoCorp Announcer (voice) / Solomon The Great (voice)
Timmy (voice) / Wereman (voice)
Narrator (voice)
Television Announcer (voice) / News Bulletin Announcer (voice)
Caroline Foxworth (voice) / The Smoo Show Singers (voice)
Additional Dinosaur Performer / Cavepeople
Clerk (voice) / Muse (voice)
Arthur Rizzic (voice) / Aubrey Molehill (voice)
